Cooling-water-controlling means for compressors



W. RAYMOND Oct. 4, 1927.

COOLING WATER CONTROLLING MEANS FOR' COMPRESSORS Filed Oct. 7, 1926 In van for Patented 0a. 4, 1927. v

UNITED STATES PATENT OFFICE.

WARD RAYMOND, OF EASTON, PENNSYLVANIA, ASSIGNQR TO PENNSYLVANIA PUMP & COMPRESSOR COMPANY, OF-"EASTON, PENNSYLVANIA, A. CORPORATION OF PENN- SYLVANIA.

COOLING=WATERCONTROLLING MEANS FOR COMPRESSORS.

Application filed October 7, 1926. Serial "No. 140,087.

This-invention relates to water valves for compressors and in particular to a valve adapted to control the supply of coolm water to the jacket of a compressor. 1

An object of the present invention is to provide a cooling water supplying means particularly adapted for intermittently operfluid within the cylinder and adapted to act through a check valve upon a diaphragm movement of which opens and closes the water valve.

Another object of the invention is to operate t-he water supplying'valve by pressure from within the compressor cylinder and supplied to the controlling means through the indicator opening of the compressor cylinder sot-hat no additional opening will be required to be made.

Another ob ect of the invention is to normallyvhold the water controlling valve closed by. spring means so long as no pressure is being built up within the cylinder, the tension of the spring being adjustable.

With these and other objects in view my invention consists in the features of construction and operation set forth in the following specification and illustrated in the accompanying drawings.

In the accompanying drawing annexed hereto and forming .a part of this specification, I have-shown my invention embodied in a constantly driven compressor adaptedto be intermittently loaded and unloadedin accordance with the demands upon the compressor, but it will be understood that the invention can be otherwise embodied and that the drawing is not to be construed as defining or limiting the scope of the invention, the.

claims appended to this specification being relied upon for that purpose.

In the drawing: a l Fig. 1 is a side view of a complete compressor provided with the present invention; Fig. 2 is an end view of the same, the'flywhcpel and main bearings not being shown; I an Fig. 8 is a cross-sectional 'view on an.en-' larged scale through the improved water congrolling valve and operating means thereor. i y

In theabove mentioned drawing, I have shown but one embodiment of the invention whichis now deemed preferable, but it is to be understood that changes and modifications may be made within the scope of the appended claims without departing from the spirit of the invention.

Briefly, and in its broadest aspect, my invention comprises the following principal parts: First, a compressor cylinder having an opening extendingthrough the cylinder wall into the cylinder adjacent an end thereof; second, a water jacket surrounding the cylind er and adapted to be supplied with cooling water; third, a valve adapted to control the admission of water to the jacket; fourth, a diaphragm suitably "mounted adjacent the valve and attachedthereto so that movement 7 of the diaphragm will move the valve toits, open and shut position; fifth, means-to adrmit fluid being compressed to one side of the diaphragm; sixth, a check valve in said means preventing fluid from returning to'the s0 cylinder from the diaphragm; and seventh, aspring normally forcing the. diaphragm and valve in one direction.

Referring more in detail to the figures of the drawing I provide a compressor having a cylinder 10 with a jacket 11 surrounding it through which cooling water may 'becircu-- lated. As the form of cylinder,'the water jacket and valve mechanism for the compressor may be of any usual or standardto types, it is not thought that these parts will require further description. The invention is designed primarily for compressors adapted to be intermittently loaded and unloaded, but maintained constantly in operation. The compressor may therefore be driven from the flywheel 12 by any convenientconstantly operated means.

no fluid is being compressed withinthe cylinder 10. Within the conduits 13 for supplying the cooling water a valve 14 is inserted which is maintained openwhile the compressor is operating to compress fluid and adapted to be closed bya spring 15 as soon as the compressoris unloaded and continues to operate i-dly. To move the valve 14, which as shown is of the balanced type, within its casing 16 to an open position as shown in Fig. 3 the valve 14 is extended and has fixed thereto flexible diaphragm 17.

The diaphragm 17 is mounted within a cas-' ing 18 and is held in place therein at its periphery- As shown in Fig. 3 the casing 18 is formed of two parts threaded together and engages the peri her-y of the diaphragm 17 between them. is its center the diaphragm 17 is attached to the extended portion of the valve 14.

.One side of the diaphragm 17 is subjected to, the maximum pressures developed within the compressor cylinder 10 during operation. .For this purpose an opening 19 is provided within the casing 18 through which pressure of the compressed fluid may be admitted to one side of the diaphragm 17. Preferably; and as shown in Figs. 1 and 2 of the drawing, the pressure to the diaphragm 17 is supplied from the cylinder 10 through the indicator opening 20. Fitted intothis opening which enters the cylinder 10 adjacent one end is a nipple to which is fitted a check valve 21. This check valve may be of any standard or usual form and is'positi-one'd to permit fluid to pass in the direction indicated by the arrow in Fig. '2,

but is adapted to close against fluid passing in the opposite direction. Directly connected to this check valve 21 by means of a pipe nipple is the casing 18. It will be seen, therefore, from the above description that during normal operation of the compressor the. pressure builtup within thecylinder 10 will cause fluid to pass through the check valve 21 and press against one side of the diaphragm 17, thus forcing the central portion of the diaphragm 17 in a direction to open the valve 14. V'Zith the valve 14 in its open position water may pass from the conduit 13 through the valve casing 16 and into the conduits 2-2 from which it may enter the jacket 11 of the cylinder 10. As soon as the compressor is unloaded by a usual means. as by supplying receiver pressure to conduit 27 to render the intake valves inoperative, the pressure within. the casing 18 maybe exhausted'through the leak port 23,

the opening through which may be varied by the needle valve 24. The valve 14 is then closed by the action of spring 15, thusshut ting off the supply of water very promptly. I Preferably, and as shown in Fig. '3, the part extended from the'valve 14 is guided within the casing 16 and is formed with a plurality of annular grooves 25 forming oil retaining spaces. Also the casing 16 is provided with a conduit 26 extending between the spaces occupied by the valve 14 and thedia'phragm 17 so that there will be no tendency for a pressure to be built up on the pres'sor again operating normally; the pres-- sure at the end of a compressing stroke oithe compressor causesthe compressed fluid to pass through the opening 20 through the check valve '21 and again move the diahragm 17 to open the valve 14., Gosling" water is therefore supplied to th'e cylinder jacket all times during the aar'mal Opesation of the compressor, but'as' soon as the compressing operation is"stopped,the sup ply of circulating water is disck'mtinuec l. 'As

long as no compression of fluid takesplace within the cylinder, Whether the compressor continues to idle or not, no circulating or cooling water is supplied to the jacket. I claim as my invention:

1. Water controlling means for compres-' sors comp-rising in combination a compreseo'r cylinder having an opening through the wall thereof, a check valve connected to. the

cylinder at said opening, permitting com-Q pressed fluid to passfrom said cylinder but not enter said 'cylinder a valve casing eonnected directly to sald check valve, a valve within sa-id casing,- a movable member at- V said movable member moves said valve; and

water supplying conduits "epene'd' and closed by movement of said valve and movable member;

2. Water controlling m ans for com'pressors comprising in combination a cylinder,

having a water jacket, a water supplying conduit for said jacket, avalve in said conduit, movable member connected to said valve whereby movement or said movable member will move said valve, means, con-' necting one side of said, movable member to the interior of sald cylinder ad acent one end whereby fluid pressure wlthin' said cylinder may be, admitted'directly to one side of said movable member, a check valve in" said connecting. means preventing .retrograde movement of fluid, and a spring nor: mally forcing said valve toward its closed position. j

3. Water controlling means for compres sors 'coi-iiprising in coiiibin'a'tion cylinder having amiss jacket, water supplying conduit for said jacket, a valve in said con- A the interior of said cylinder adjacent one,

end whereby fluid pressure within said cylinder may be admitted directly to one side of said movable member, a check valve in said connecting means preventing retrograde movement of fluid, a spring normally forcing said valve toward its closed position, and means to slowly exhaust fluid from said valve casing'adjacent said check valve.

In testimony whereof, I hereto afiix my signature.

WARD RAYMON 

